Bringing Cullen out into the field was the worst decision in Inquisition. He aggroed every single enemy he could at once, and made the quest way more difficult than it ought to have been. It left me questioning his position as commander altogether as tactics clearly are not among his skills. At all.

Better then what happened to me. He facing the door to the area with his weapon drawn, not helping with the courtyard fights at all until we went into the next room. Made me quest what my inquis saw in him.